Folks I'm going with "yestername"; it doesn't imply anything other than temporal precedence and sounds kinda cool. ☺️
@andi gonna dispute the "kinda" in this sentence
@andi more mundane “old name” or “previous name”
@zensaiyuki Honestly that extra syllable totally kills "previous name"
@andi could go newspeak with it.
This is the personal instance of Andi N. Fiziks. Love me or hate me it's still an obsession 😘